Improvement in straw-cutters



Patented Aug. 27, I872.

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UNITED STATES PATENT OFFICE.

TRANGOTT L. MAYNARD, OF SOUTHFIELD, MICHIGAN.

IMPROVEMENT IN STRAW-C-UTTERS.

Specification forming part of Letters Patent No. 130,936, dated August27, 1872.

To whom it may concern:

Be it known that I, TRANGOTT L. MAY- NARD, of Southfield,in the countyof Oakland and State of Michigan, have invented a new and usefulImprovement in Feed-Cutters and I do declare that the following is atrue and ac.- curate description thereof, reference being had to theaccompanying drawing and to the letters of reference marked thereon andbeing a part of this specification in which Figure 1 is a perspectiveview of my improved feed-cutter. Fig. 2 is a side elevation taken fromthe opposite side seen in Fig. l; and Fig. 3 is a longitudinalvertical'sect-ion.

Like letters refer to like parts in each figure.

The nature of this invention relates to an improvement in that class offeed-cutting machines in which the cutting of the feed iseffectedothrough one or more curved knives revolving in front of and incontact with the throat of the feed-box; and its object is to so arrangethe feeding mechanism as that the feeding of the material to the kniveswill be continuously at a uniform speed, however the volume may vary.The invention consists in the peculiar arrangement of the feedingmechanism, and the construct-ion and arrangement 1 of the various partsof the machine, as more fully hereinafter set forth.

In the drawing, A represents the framework of my machine, and B thefeed-box placed thereon, and provided with metallic throat-plates a atthe end. 0 is the drivingshaft, journaled in brackets 12, at the leftside of the box, looking at it from thefront or cutting end. On the endof this shaft is abalance-wheel, D, provided with a hand-crank, 0, onthe outer side of one of its arms. On studs projecting inwardly thereare secured two curved cuttingknives, E, which, in the rotation of thewheel sweep past and in contact with the edges of the throat-plates a,cutting off any projecting material with a drawing out. Transverselythrough the side-bars of the frameA and near the front end there isjournaled a shaft, F, carrying a worm-gear, G, which transmits to saidshaft a slow motion derived from the drivin g-shaft through the worm- Iplaced thereon. At the other end of the shaft F is a bevelgear, J, whichmeshes with a pinion, K, on a vertical shaft, L, journaled in bracketsat the side of the machine. On the shaft L is abarrel-pinion, M, withwhich meshes a crownwheel, N, on the end of a shaft which istra-nsversely journaled in loose bearings d, sliding in slots in thesides of the feed-box. This shaft is provided with a feed-roll, O, whichbears upon the material in the feed-box and feeds it forward to thethroat. In the back part of the feed-box a, shaft, F, is journaled insliding boxes P, which are adjusted by the screws 0. The bottom of thebox is open between the shafts F F, and over them passes an endlessbelt, Q, which carries forward the material to be out. To cause theupper feed-roll to bear upon the material two rods, f, are hung on itsends, which support a frame, g, pivoted to the front legs of the frame,and a weighted lever, h, bearing on said frame exerts the requireddownward pressure on the feed-roll.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the frame A, feed-box B, shaft 0, wheel D, knives E,shafts F F, belt Q, worm I, worm-gear G, bevel-gears J K, shaft L,barrel-pinion M, crown-wheel N, feed-roll O, sliding boxes (1 d P P,adjustingscrews 6 e, rods ff, frame g, and weighted lever h,constructed, arranged, and operating substantially in the mannerdescribed, for the purpose specified.

TBANGOTT L. MAYNARD.

Witnesses: p

H. F. EBERTS, J. W. BoWLER;

